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Example 5 - Factorise 4y^2 - 12y + 9 - Chapter 14 Class 9 Factorisatio


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Example 5 Factorise 4𝑦^2 – 12y + 9 4𝑦^2 – 12y + 9 = γ€–(2𝑦)γ€—^2 βˆ’ 12𝑦+(3)^2 = γ€–(2𝑦)γ€—^2 βˆ’ 2Γ—2𝑦×3 +(3)^2 = γ€–(2𝑦)γ€—^2+ (3)^2 βˆ’2Γ—2𝑦×3 Using (π‘Žβˆ’π‘)^2 = π‘Ž^2+𝑏^2βˆ’2π‘Žπ‘ Here π‘Ž=2𝑦, 𝑏=3 = (γ€–πŸπ’šβˆ’πŸ‘)γ€—^𝟐

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.